American Standard ULN80-125 Operation, Installation And Service Manual page 34

CONDITION CAUSE
High operating
costs
Insufficient
hot water
Slow water
recovery
Drip from relief valve
Electronic control
fails to close
Condensation
Combustion Odors
Smoking and
carbon formation
29
Improper calibration
Temperature set too high
Sediment or lime in tank
Heater too small for job
Leaking faucets
Gas leaks
Wasted hot water
Long runs of exposed piping
Hot water piping in outside wall
Low gas pressure
Orifice too small
Temperature set too low
Heater too small for job
Leaking faucets
Wasted hot water
Long runs of exposed piping
Hot water piping in outside wall
Insufficient secondary air
Low gas pressure
Orifice too small
Dial selector set too low
Sediment or lime in tank
Heater too small for job
Wasted hot water
Excessive water pressure
Defective electronic control
Insufficient secondary air Flue clogged
Insufficient secondary air
Low gas pressure
Orifice too large
Flue clogged
Heater installed in confined area
REMEDY
Replace control valve
Turn temperature knob to desired temperature
Clean out sediment; Refer to page 22
Install adequate heater
Repair faucets
Check with utility - repair at once
Advice customer
Insulate
Insulate
Check with utility
Replace with correct orifice
Turn temperature dial to desired temperature
Install adequate heater
Repair faucets
Advise customer
Insulate
Insulate
Clear the area near the heater
Check with utility
Replace with correct orifice
Turn temperature dial to desired temperature
Clean out sediment; Refer to Page 22
Install adequate heater
Advise customer
Use pressure reducing valve
Replace with new electronic control
See Page 23
Provide ventilation to heater Clean-check for source of trouble & correct
Provide ventilation to heater
Check with utility
Replace with correct orifice
Clean-check for source of trouble & correct
Provide ventilation by use of louvers in wall or duct